Java String Concat Example
- /*
- Java String Concat Example.
- This Java String concat example shows how to concat String in Java.
- */
- public class JavaStringConcat {
- public static void main(String args[]){
- /*
- * String concatenation can be done in several ways in Java.
- */
- String str1 = "Hello";
- String str2 = " World";
- //1. Using + operator
- String str3 = str1 + str2;
- System.out.println("String concat using + operator : " + str3);
- /*
- * Internally str1 + str 2 statement would be executed as,
- * new StringBuffer().append(str1).append(str2)
- *
- * String concatenation using + operator is not recommended for large number
- * of concatenation as the performance is not good.
- */
- //2. Using String.concat() method
- String str4 = str1.concat(str2);
- System.out.println("String concat using String concat method : " + str4);
- //3. Using StringBuffer.append method
- String str5 = new StringBuffer().append(str1).append(str2).toString();
- System.out.println("String concat using StringBuffer append method : " + str5);
- }
- }
- /*
- Output of Java String concat example would be
- String concat using + operator : Hello World
- String concat using String concat method : Hello World
- String concat using StringBuffer append method : Hello World
- */
